Why Sleep Is Non-Negotiable for Fitness
During deep sleep, your body releases growth hormone (HGH), repairs muscle tissue, and consolidates motor learning from your training. Athletes sleeping under 7 hours show measurably worse performance. No supplement replaces good sleep — but the right ones can help you get there.
The Supplements That Actually Work
1. Magnesium Glycinate
Magnesium is involved in over 300 enzymatic reactions, including neurotransmitter regulation. Most adults are mildly deficient. Magnesium glycinate is the most bioavailable form and is gentle on the stomach.
- Dose: 200–400mg before bed
- Best for: Falling asleep faster, less anxiety
🏆 Best Sleep Supplement
Magnesium Glycinate is our #1 recommendation for anyone who has trouble falling or staying asleep.
Check Price on Amazon →2. Ashwagandha (KSM-66)
This adaptogen reduces cortisol (the stress hormone) and improves sleep quality. The KSM-66 extract is the most researched form.
- Dose: 300mg KSM-66, once daily (not necessarily at bedtime)
🌿 Best Natural Sleep Aid
Ashwagandha KSM-66 reduces stress and anxiety, leading to deeper and more restorative sleep over time.
Check Price on Amazon →3. Glycine
3g of glycine before bed has been shown in Japanese studies to improve sleep quality and reduce daytime sleepiness.
What to Skip
- Melatonin: Effective for jet lag only. For most people, the dose sold in stores (3–10mg) is 10x the amount needed.
- Diphenhydramine (Benadryl): Disrupts REM sleep architecture.